Books: Like a Windy Day by Frank Asch or The Wind Blew by Pat Hutchins
Activity: Explain to children that wind is moving air. We can’t see air. And we can’t see wind. Ask them: If we can’t see wind, how can we tell if it is blowing?
If someone doesn’t come up with the idea, suggest that we can see things that are moved by wind. Have your students name things they see blowing in the wind, from hair to trees to a kite.
Finish this part of the lesson by reading one of the books listed above. Fun idea: Bring in a fan and let it blow at different speeds while reading.
Supplies: Cotton balls, masking tape, straws (optional)
Preparation: Use the tape to create a start and finish line across tables or the floor.
Activity: Have children become the wind and try to blow a cotton ball from the start to the finish line. They can do it by simply blowing or by blowing through a straw.
Follow-Up: Ask your students if their cotton balls just moved in one direction. If not, why not? (Because the direction of their breath—“the wind”—changed.)
Supplies: Short piece of light yarn, bubble mix, a breezy day
Preparation: Tie the yarn on to a pole or something where it can be blown easily.
Activity: Ask your students which way the wind is blowing. Ask them if they can tell by looking at the yarn or the trees. Test their answers by blowing some bubbles into the air. Let the children run to follow the bubbles.
Follow-Up: Ask your students if the bubbles always moved in just one direction. If not, why not? (The direction of the wind may have changed. Or, a house or other structure may have blocked the wind for a while, and when the bubbles rose above it, they changed direction.)
Wind is air in motion. It is produced because the Earth’s surface absorbs the sun’s radiation unevenly. Warm air rises, and cold air sweeps in to take its place. This movement of air is what makes the wind blow.